armv8: Start with all interrupts disabled

Signed-off-by: Lukas Humbel <lukas.humbel@inf.ethz.ch>

arms: unifying interrupts, timers and platform data

Signed-off-by: Adam Turowski <adam.turowski@inf.ethz.ch>

arm: adding gic v3

Signed-off-by: Adam Turowski <adam.turowski@inf.ethz.ch>

ARM: unifying coreboot on ARMv7 and ARMv8

Coreboot:
* use of hwid_t instead of coreid_t to ensure enough size
* adding context id parameter to the start function

ARMv8:
* removing PSCI debug syscall and use ipi_cap instead
* implementaton of platform specific call functions

ARMv7:
* adapting call sites to deal with new argument
* adaption of platform boot function

Signed-off-by: Reto Achermann <reto.achermann@inf.ethz.ch>

kernel/armv8: Move GIC initialization to platform-specific code

Signed-off-by: Moritz Hoffmann <moritz.hoffmann@inf.ethz.ch>

kernel/armv8: Return FVP platform for ARMv8 VM cpu drivers

Signed-off-by: Moritz Hoffmann <moritz.hoffmann@inf.ethz.ch>

aarch64: return initial platform info for VM-based platforms

Signed-off-by: Moritz Hoffmann <moritz.hoffmann@inf.ethz.ch>

aarch64: Make generic timer initialization platform independent

Signed-off-by: Moritz Hoffmann <moritz.hoffmann@inf.ethz.ch>

armv8: introducing platformfiles for A57 and generic ARM virtual machine (qemu)

Signed-off-by: Reto Achermann <reto.achermann@inf.ethz.ch>